Answer: Body mass index , overweight
Step-by-step explanation:
Body mass index(BMI) is defined as the value that is obtained after relation height with mass of the body.It defines about composition of any human body by measuring these factor.BMI ranging between 18 to 24 is considered normal. More than or less than this measure is considered overweight and underweight respectively.
Overweight is the state of body in which body fat tends to increase which impacts in increment of body weight.This condition is more than the normal state of healthy body and thus can result in different problems like obesity, heart diseases, diabetes etc.
According to the question, Tom's BMI(body mass index) is 28 and he is considered overweight as BMI is more than normal(18 to 24) BMI of a human body due to fat .